Here is the full list of all 50 WRATH: Aeon of Ruin achievements.
Defeat the Lady of Ascension without taking damage
Beat WRATH
Defeat the Dreadful One using only the Blade and Mace
Defeat the Dreadful One
Find all secrets in WRATH
Find all secrets in the Wretched Domain
Shoot all the eyes in the Blood Pits
Find Kells' Cage in the Crucible of Souls
Expose the core in the Red Throne
Shut off the factory pipes in the Rending Chambers
Collect 100 Souls with the Mace of Devastation
Stay in lava for 15 seconds
Enter the Wretched Domain
Find all secrets in the Eventide Wastes
Defeat the Lord of Etherion within 3 minutes
Defeat the Lord of Etherion
Deal 40,000 damage with one Flask of Rage
Find the only underlift secret in WRATH
Start up the Orrery in the Watchtowers
Destroy all the statues in the Shadow Pantheon
Open half the coffers in WRATH
Kill 10 enemies with one Shockwave
Kill 5,000 enemies
Kill 10 enemies with Vicious Animus turrets
Hit 5 enemies from one Crystalized enemy
Kill 3 flying enemies with one Void Grenade
Find the Crystallizer beneath the Crystal Dunes
Find all secrets in Mourningvale
Cannonjump with the Slag Cannon
Find the set of Dark Armor from the previous Outlander
Find all secrets in one map
Enter the Eventide Wastes
Defeat the Lady of Ascension
Deflect 100 projectiles with Orbs of Deflection
Heal 1,000 Lifeblood with Life Siphons
Stay underwater for 80 seconds
Use 10 Soul Tethers
Kill an enemy while at 1 health, without the Cruel Aegis
Kill 100 enemies with the Blade of Ruination
Kill 10 enemies with Confounding Attars
Kill multiple enemies with one shot of the Shotgun's secondary fire
Find the keyhole secret in the Mire
Kill an enemy with a planted Cyst
Kick 100 heads
Kill a Wretch with another Wretch explosion
Enter Mourningvale
Enter the Isle Of The Dead
Collect all the Notes in WRATH
Beat WRATH on Outlander difficulty
Open all the coffers in WRATH